man Am I glad I found this place! I am having a hell of a time trying to run down a wiring problem on my "81 F100, 4wd, 351m, auto. I would like to find a wiring schematic for this so I can download to pdf and help the friend i have working on it.No power to the switch??? really need a diagram. Anybody have anything to help. It's my plowtruck and I live in Maine if that tells you anything HA!Appreciate any help I can get thanks Win3855